There is no strategy to determine altcoin will be profitable because the price will depend on demand and supply even a good trader makes some mistakes when buying a coin.
Just so no one can predict What price will be on Bitcoin. Some sellers have already learned how to manipulate the price on the market. That's why the forum is cracking. From comments with negative aspects of the relative market of crypto currency.
someone must have figured its only about looking how much is the marketcap and volume to see its going to be profitable depending on time. those 10 tokens on top of the coinmarketcap, aren't they all moving up constantly? if you have invested to them for a year, you must have profited already.